./a.out < wait3.txt &
./a.out < wait3.txt &
./a.out < wait3.txt &
./a.out < wait3.txt &
./a.out < wait3.txt &
./a.out < wait3.txt &
./a.out < wait3.txt &
./a.out < wait3.txt &
./a.out < wait3.txt &
./a.out < wait3.txt &
./a.out < wait3.txt &
./a.out < wait3.txt &
./a.out < wait3.txt &
./a.out < wait3.txt &
./a.out < wait3.txt &
